Digital Security Controls Ltd. 09WS4913 User Manual

 

                                                        2 

 

 
 
 

The 6 digit serial number located on the back of the CO alarm housing 
must be enrolled into the alarm control panel with Installer programming. 
Refer to the receiver Installation Manual for details.

 

 

 

Carbon monoxide, also known as "CO" by the chemical form, is 
considered to be a highly dangerous poisonous gas, because it is 
colorless, odorless or tasteless and very toxic. In general, biochemistry 
phenomena have shown that the presence of CO gas inhibits the blood's 
capacity to transport oxygen throughout the body, which can eventually 
lead to brain damage.

 

 

In any enclosed space (home, office, recreational vehicle or boat) even a 
small accumulation of CO gas can be quite dangerous. 

Although many products of combustion can cause discomfort and 
adverse health effects, it is CO gas which presents the greatest threat to 
life.

 

 

Carbon monoxide is produced by the incomplete combustion of fuels 
such as natural gas, propane, heating oil, kerosene, coal, charcoal, 
gasoline, or wood. The incomplete combustion of fuel can occur in any 
device which depends on burning for energy or heat such as furnaces, 
boilers, room heaters, hot water heaters, stoves, grills, and in any 
gasoline powered vehicle or engine (e.g. generator set, lawnmower). 
Tobacco smoke also adds CO to the air you breathe.

 

 

When properly installed and maintained, your natural gas furnace and hot 
water heater do not pollute your air space with CO. Natural gas is known 
as a "clean burning" fuel because under correct operating conditions, the 
combustion products are water vapor and carbon dioxide (CO

2

), which is 

not toxic. The products of combustion are exhausted from furnaces and 
water heaters to the outside by means of a fuel duct or chimney. 

 

Correct operation of any burning equipment requires two key conditions: 

(a) An adequate supply of air for complete combustion. 
(b)  Proper venting of the products of combustion from the

 furnace 

through the chimney, vent or duct to the outside. 

Typical carbon monoxide gas problems are summarized here: 

(a)  Equipment problems, due to defects, poor maintenance, 

damaged and cracked heat exchangers. 

(b)  Collapsed or blocked chimneys or flues, dislodged, disconnected 

or damaged vents 

(c)  Downdraft in chimneys or flues. This can be caused by very long 

or circuitous flue runs, improper location of flue exhaust or wind 
conditions 

(d)  Improper installation or operation of equipment, chimney or vents 
(e)  Air tightness of house envelop/inadequate combustion of air 
(f) 

Inadequate exhaust of space heaters or appliances 

(g)  Exhaust ventilation/fireplace competing for air supply.

 

 
 

Potential sources of carbon monoxide in your home or office include 
clogged chimney, wood stove, wood or gas fireplace, automobile and 
garage, gas water heater, gas appliance, gas or kerosene heater, gas or 
oil furnace, and cigarette smoke.

 

 
 

1.Excessive spillage or reverse venting of fuel burning appliances caused 

by  

(a.)Outdoor ambient conditions such as wind direction and or velocity 

, including high gusts of wind; heavy air in the vent pipes (cold 
humid air with extended periods between cycles) 

(b.)Negative pressure .differential resulting from the use of exhaust 

fans. 

(c.)Simultaneous operation of several fuel burning appliances 

competing for limited internal air. 

(d.)Vent pipe connection vibrating loose from clothes dryers, 

furnaces, or water heaters. 

(e.)Obstructions in or unconventional vent pipe designs which amplify 

the above situation.

 

 

 

2.Extended operation of    unventilated fuel burning devices (range , 

oven,fireplace, etc)

 

 

3.Temperature inversions which can trap exhaust gases near the ground.

 

 

4. Car idling in an open or closed attached garage, or near a home   

Carbon monoxide is colorless, odorless, tasteless, and very toxic. When 
inhaled, it produces an effect known as chemical asphyxiation. Injury is 
due to the combining of CO with the available hemoglobin in the blood, 

lowering the oxygen-carrying capacity of the blood. In the presence of CO 
gas, the body is quickly affected by oxygen starvation. 

 
 

The following symptoms are related to CO poisoning and should be 
discussed with all members of the household so that you know what to 
look for: 

(a)  Extreme exposure: unconsciousness, convulsions, cardio- 

respiratory failure, death 

(b)  Medium exposure: severe throbbing headache, drowsiness, 

confusion, vomiting, fast heart rate 

(c) Mild exposure: slight headache, nausea, fatigue (similar to 

"flu-like" symptoms) 

 

Many victims of carbon monoxide poisoning indicate that while they were 
aware that they were ill , they became so disoriented and confused that 
they were unable to help themselves by either exiting the building or calling 
for a assistance. Young children and household pets may be the first 
affected. Exposure during sleep is particularly dangerous, because the 
victim usually does not awaken.

 

 
 

▲

In case of harmful levels of CO gas being detected, your CO alarm M330 
will go into a CO alarm mode as mentioned above. in “ CO Alarm Mode” 
Try to take the following necessary actions immediately: 

(a)  If there is anyone experiencing the effects of carbon monoxide 

poisoning such as headache, dizziness, nausea or other flu-like 
symptoms, call your fire department right away or 911. You should 
evacuate all the people in the premises immediately. Do a head 
count to check that everybody is accounted for.   

 

(b)  Do not re-enter the premises until the problem has been corrected 

and the CO gas has been dispersed out and a safe level is reached. 

 

(c)  If no symptoms exist, Immediately 

ventilate the home by opening 

windows and doors. Turn off fuel burning appliances and call a 
qualified technician or your utility company to inspect and repair 
your problem before restarting appliances. 

Normally an activation of the CO alarm indicates the presence of CO gas. 
However, the CO gas can be extremely fatal, if it is not detected. The 
source of the CO gas may come from several possible situations, please 
refer to the list of sources of carbon monoxide in page 1. 

▲

This CO alarm will only indicate the presence of CO 

gas at the sensor. However, you have to be aware that the CO gas may 
be present in other areas in the premises. 

 
 
 

Once the problem about the CO gas presence in the premises has been 
corrected, the alarm of the CO alarm unit should be off. After waiting for 
10 minutes, push the Test button to test the CO alarm unit so that you can 
make sure that it is working properly again. 
 

Follow the test procedure described here or contact your CO alarm 
unit dealer or installer for testing instructions . DSC recommended 
that you test the entire alarm system at least one a week to verify the 
operation of all functions.       
The test/silence button is used to test if the CO alarm is working properly 
and to mute the unit during alarm. 
 

Press the test button and you should hear 4 short beeps with a 
corresponding three LED flashes in 5 seconds , this cycle will repeat one 
more time.   
Familiarize yourself and your family members with this alarm pattern as 
this testing simulates a actual CO alarm condition.   

If the CO alarm is sounding, pressing the test/silence button will have the 
alarm muted while at the same time red LED keeps flashing. After 4 
minutes, if the CO concentration caused the alarm still remains at alerting   
condition, the CO alarm will reactivate. 
 

The CO alarm unit is designed to require minimum maintenance,